The Rhine, one of Europe’s most important rivers, has seen water levels continue
to fall, restricting barge carrying capacity and, together with the ongoing
protracted Iran conflict, adding further pressure to regional fuel supply
chains. Spotbarge data showed that earlier on Wednesday water at Germany’s key
navigation point Kaub had dropped to extremely low levels, with a 110‑metre
barge able to carry just over 1,000 tonnes of diesel — roughly 40% of its total
rated capacity. The Rhine is a critical European transport artery: over 280
million tonnes of cargo moved via the waterway in 2024, with petroleum products
accounting for more than 20% of that volume.